forked from pingcap/br
/
mock_cluster.go
194 lines (177 loc) · 4.29 KB
/
mock_cluster.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
// Copyright 2020 PingCAP, Inc. Licensed under Apache-2.0.
package mock
import (
"database/sql"
"fmt"
"io/ioutil"
"net/http"
"net/http/pprof"
"net/url"
"strconv"
"strings"
"sync"
"time"
"github.com/go-sql-driver/mysql"
"github.com/pingcap/errors"
"github.com/pingcap/log"
"github.com/pingcap/tidb/config"
"github.com/pingcap/tidb/domain"
"github.com/pingcap/tidb/kv"
"github.com/pingcap/tidb/server"
"github.com/pingcap/tidb/session"
"github.com/pingcap/tidb/store/mockstore"
"github.com/pingcap/tidb/store/tikv"
"github.com/pingcap/tidb/store/tikv/mockstore/cluster"
pd "github.com/tikv/pd/client"
"github.com/tikv/pd/pkg/tempurl"
"go.uber.org/zap"
)
var pprofOnce sync.Once
// Cluster is mock tidb cluster, includes tikv and pd.
type Cluster struct {
*server.Server
cluster.Cluster
kv.Storage
*server.TiDBDriver
*domain.Domain
DSN string
PDClient pd.Client
}
// NewCluster create a new mock cluster.
func NewCluster() (*Cluster, error) {
pprofOnce.Do(func() {
go func() {
// Make sure pprof is registered.
_ = pprof.Handler
addr := "0.0.0.0:12235"
log.Info("start pprof", zap.String("addr", addr))
if e := http.ListenAndServe(addr, nil); e != nil {
log.Warn("fail to start pprof", zap.String("addr", addr), zap.Error(e))
}
}()
})
var mockCluster cluster.Cluster
storage, err := mockstore.NewMockStore(
mockstore.WithClusterInspector(func(c cluster.Cluster) {
mockstore.BootstrapWithSingleStore(c)
mockCluster = c
}),
)
if err != nil {
return nil, errors.Trace(err)
}
session.SetSchemaLease(0)
session.DisableStats4Test()
dom, err := session.BootstrapSession(storage)
if err != nil {
return nil, errors.Trace(err)
}
return &Cluster{
Storage: storage,
Cluster: mockCluster,
Domain: dom,
PDClient: storage.(tikv.Storage).GetRegionCache().PDClient(),
}, nil
}
// Start runs a mock cluster.
func (mock *Cluster) Start() error {
statusURL, err := url.Parse(tempurl.Alloc())
if err != nil {
return errors.Trace(err)
}
statusPort, err := strconv.ParseInt(statusURL.Port(), 10, 32)
if err != nil {
return errors.Trace(err)
}
addrURL, err := url.Parse(tempurl.Alloc())
if err != nil {
return errors.Trace(err)
}
addrPort, err := strconv.ParseInt(addrURL.Port(), 10, 32)
if err != nil {
return errors.Trace(err)
}
_ = addrPort
mock.TiDBDriver = server.NewTiDBDriver(mock.Storage)
cfg := config.NewConfig()
cfg.Port = uint(addrPort)
cfg.Store = "tikv"
cfg.Status.StatusPort = uint(statusPort)
cfg.Status.ReportStatus = true
svr, err := server.NewServer(cfg, mock.TiDBDriver)
if err != nil {
return errors.Trace(err)
}
mock.Server = svr
go func() {
if err1 := svr.Run(); err != nil {
panic(err1)
}
}()
mock.DSN = waitUntilServerOnline(addrURL.Host, cfg.Status.StatusPort)
return nil
}
// Stop stops a mock cluster.
func (mock *Cluster) Stop() {
if mock.Domain != nil {
mock.Domain.Close()
}
if mock.Storage != nil {
mock.Storage.Close()
}
if mock.Server != nil {
mock.Server.Close()
}
}
type configOverrider func(*mysql.Config)
const retryTime = 100
var defaultDSNConfig = mysql.Config{
User: "root",
Net: "tcp",
Addr: "127.0.0.1:4001",
}
// getDSN generates a DSN string for MySQL connection.
func getDSN(overriders ...configOverrider) string {
cfg := defaultDSNConfig
for _, overrider := range overriders {
if overrider != nil {
overrider(&cfg)
}
}
return cfg.FormatDSN()
}
func waitUntilServerOnline(addr string, statusPort uint) string {
// connect server
retry := 0
dsn := getDSN(func(cfg *mysql.Config) {
cfg.Addr = addr
})
for ; retry < retryTime; retry++ {
time.Sleep(time.Millisecond * 10)
db, err := sql.Open("mysql", dsn)
if err == nil {
db.Close()
break
}
}
if retry == retryTime {
log.Panic("failed to connect DB in every 10 ms", zap.Int("retryTime", retryTime))
}
// connect http status
statusURL := fmt.Sprintf("http://127.0.0.1:%d/status", statusPort)
for retry = 0; retry < retryTime; retry++ {
resp, err := http.Get(statusURL) // nolint:noctx
if err == nil {
// Ignore errors.
_, _ = ioutil.ReadAll(resp.Body)
_ = resp.Body.Close()
break
}
time.Sleep(time.Millisecond * 10)
}
if retry == retryTime {
log.Panic("failed to connect HTTP status in every 10 ms",
zap.Int("retryTime", retryTime))
}
return strings.SplitAfter(dsn, "/")[0]
}